Jake Watson

Jake Watson

@jakefwatson.bsky.social

Neurophysiologist @researchmar.bsky.social Research team: https://humancircuits.net/ Synapses, hippocampus, human circuits. Google Scholar: https://bit.ly/jakefwatson

997 followers548 following83 posts

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And it's a nice time to mention: from September, I'll be setting up human circuit research with Hospital del Mar in Barcelona. We want to use the amazing opportunity of surgical samples to explore how our own brain works. If you want to discuss ideas/collaborations/anything, lets chat at #FENS2026!!

Jake Watson@jakefwatson.bsky.social

If you are at #FENS2026, we have a symposium on human circuits - from single cells and synapses to intact circuit function! It's not easy to investigate how our own brain works, but we will present recent work showing that it is possible at many scales. Wednesday afternoon at 15:40 - Hall E.

Jake Watson reposted

I am very excited to see this work out and so proud of @mictott.bsky.social & @svitlanabach.bsky.social! Study is a great example of moving beyond generating spatial transcriptomics data simply to generate molecular maps, to using the data to answer longstanding questions about human 🧠 organization.

Michael Totty@mictott.bsky.social

Incredibly proud to share our newest work where we developed a multiscale spatial transcriptomic atlas of the human amygdala using three complementary technologies! 1/12 🧵 www.biorxiv.org/content/10.6...

Jake Watson reposted

A big thanks to Alissa @thetransmitter.bsky.social for highlighting our CA3 preprint!! Another interesting piece in the ‘cell diversity defining circuits’ puzzle! 🧩

The Transmitter @thetransmitter.bsky.social

The hippocampal CA3 region may not be one uniform network after all. A new preprint identifies two distinct populations of pyramidal neurons, offering a new framework for understanding how memory circuits are organized. #neuroskyence By Alissa de Chassey www.thetransmitter.org/memory/textb...

Here’s a summary for those interested: bsky.app/profile/jake...

Jake Watson@jakefwatson.bsky.social

We have a new preprint! By studying neuronal heterogeneity in CA3, we found a weird but powerful new feature in the hippocampal circuitry! 🧠 #neuroskyence 🧵.. Morse-Mora et al. | Hippocampal CA3 forms a two-layer network of molecularly distinct cell types in mice and humans doi.org/10.64898/202...

We have a new preprint! By studying neuronal heterogeneity in CA3, we found a weird but powerful new feature in the hippocampal circuitry! 🧠 #neuroskyence 🧵.. Morse-Mora et al. | Hippocampal CA3 forms a two-layer network of molecularly distinct cell types in mice and humans doi.org/10.64898/202...

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Using patient tissue, we find distinct properties of deep and superficial cells in humans, with species-conserved functional hallmarks. Intriguingly, deep CA3 cells were shown to have a GWAS link to human intelligence..! Perhaps these 'Shepherds of CA3' play a crucial role in cognitive function..

This was a super team project with Rebecca Morse-Mora, the Peter Jonas lab and scientific services at @istaresearch.bsky.social, enabled by our fantastic collaboration with Prof. Karl Rössler at the @meduniwien.ac.at. We still have a lot to learn about hippocampal function and #humancircuits!! 🔎

doi.orgHippocampal CA3 forms a two-layer network of molecularly distinct cell types in mice and humansAssociational memory is critically dependent on the CA3 recurrent circuit, at the centre of the hippocampal system. While diversity amongst CA3 pyramidal neurons (PNs) has been long reported, the prin...

We have a new preprint! By studying neuronal heterogeneity in CA3, we found a weird but powerful new feature in the hippocampal circuitry! 🧠 #neuroskyence 🧵.. Morse-Mora et al. | Hippocampal CA3 forms a two-layer network of molecularly distinct cell types in mice and humans doi.org/10.64898/202...

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But there's a big surprise with projections! Sup CA3 cells form the textbook associative network we know and love. But not deep cells. They form hemisphere-specific modules that appear built to regulate the superficial network through excitation and FF inhibition. A new hippocampal circuit module! 🦚

We have a new preprint! By studying neuronal heterogeneity in CA3, we found a weird but powerful new feature in the hippocampal circuitry! 🧠 #neuroskyence 🧵.. Morse-Mora et al. | Hippocampal CA3 forms a two-layer network of molecularly distinct cell types in mice and humans doi.org/10.64898/202...

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We made a mouse line for genetic access to these two cells. Patch-clamp recordings show that deep St18+ PNs unify the bursting, long-shank, athorny, and sparsely thorny neurons reported across the last 40 years!

We mapped the differentiation of these cells in development. The two cell types are not born strictly sequentially, but we see preferentially early generation of deep cells.. following general rules of the cortex!

We have a new preprint! By studying neuronal heterogeneity in CA3, we found a weird but powerful new feature in the hippocampal circuitry! 🧠 #neuroskyence 🧵.. Morse-Mora et al. | Hippocampal CA3 forms a two-layer network of molecularly distinct cell types in mice and humans doi.org/10.64898/202...

Heterogeneity is everywhere in the brain, but making sense of it isn't easy. To understand CA3 neuron heterogeneity, we started from scratch using the amazing #openscience resources from the @alleninstitute.org. Surprisingly, reanalyzing CA3 showed not one, but two clear pyramidal neuron types!

These cell types are deep and superficial neurons, with the St18 gene marking deep CA3 cells. CA1 has much better studied heterogeneity, but in contrast to CA3, deep and superficial CA1 cells behave more like a gradient than distinct cell types. CA3 has uniquely strong PN cell type identity!

If you are at #FENS2026, we have a symposium on human circuits - from single cells and synapses to intact circuit function! It's not easy to investigate how our own brain works, but we will present recent work showing that it is possible at many scales. Wednesday afternoon at 15:40 - Hall E.

And we have exciting new data on CA3 circuit architecture across species. 🐁🐖⛹️‍♀️ The hippocampus has another surprising twist for us! If you want to hear more, come to Rebecca Morse-Mora's poster (PS02-07PM-553) on Tuesday afternoon, 14:00-17:30

Jake Watson reposted

"The results are astonishingly clear. On rewilded land, biodiversity surged across the board, with the number of bird species up 261%. The variety of bumblebee and butterfly species more than doubled, their abundance increased over 10x." The cure for nature loss exists. share.google/w30RUdw1902W...

share.googleRewilding linked to dramatic increases in birds across ScotlandNew research across Scotland's Northwoods Rewilding Network has revealed striking biodiversity gains on rewilded land, with bird diversity increasing by more than 260% and pollinating insects rising m...

Jake Watson reposted

🧠🪰 The adult Drosophila brain connectome now gives us a complete wiring diagram of ~140k neurons. But a wiring diagram alone isn’t understanding. How is this massive network organized? Our paper tackles that question by mapping community structure across the entire fly brain. 1/

Rick Betzel@richardfbetzel.bsky.social

New lab paper - will say more about this in a little while

And you'll find the preprint explainer here:

Jake Watson@jakefwatson.bsky.social

Recording synaptic minis (mEPSCs)? We have a new paper trying to better understand how recorded datasets match synaptic changes. In short, they don't.. More info below, and the preprint here: biorxiv.org/content/10.1101/2024.10.26.620084v1

Jake Watson reposted

Jake Watson reposted

Finding correlates of the same signal in different brain areas is not evidence against specialisation, it is evidence for interconnection. When I flush my toilet, the level in the tank and the flow rate in the supply pipe become perfectly correlated. Yet these toilet areas have distinct functions.

Jake Watson reposted

Are you passionate about advancing cutting-edge imaging technologies, and combine expansion microscopy with the power of AI@HHMI to unlock new biological discoveries? If you’re ready for a creative,and impactful journey, we’d love for you to apply! hhmi.wd1.myworkdayjobs.com/en-US/Extern...

hhmi.wd1.myworkdayjobs.comResearch Specialist - Expansion MicroscopyPrimary Work Address: 19700 Helix Drive, Ashburn, VA, 20147 Current HHMI Employees, click here to apply via your Workday account. The Howard Hughes Medical Institute’s Janelia Research Campus is a pio...

There is a lot more on cell and synaptic properties in the full paper, but this data adds to the emerging picture of heterogeneous excitatory neurons... many interesting cell and circuit features can be revealed only by diving into the (often complex and confusing) heterogeneity of the brain!

Across the brain, PNs show a lot of heterogeneity. In CA3 it’s clearest on the deep-superficial axis, and we see 'deep bursting' PNs that have been shown before. From hundreds of recorded cells, these are clearly a distinct subclass in our hands, but are not strictly 'athorny' as has been suggested.

Deep and superficial PNs had a surprise in their recurrent connectivity: superficial PNs connect broadly, but deep PNs show little local connectivity back to superficial cells. This suggests that deep PNs form their own subnetwork, perhaps 'associating the associations' made in superficial CA3..

If you are interested in a position working on the coolest new developments in connectomics - take a serious look at this. Incredible technology development opportunity, working with a super nice scientist! Check out the paper here if you haven’t seen it yet: www.nature.com/articles/s41...

nature.comLight-microscopy-based connectomic reconstruction of mammalian brain tissue - NatureA technique called LICONN (light-microscopy-based connectomics) allows mapping of brain tissue at synapse level and simultaneous measurement of molecular information, thus enabling quantification of c...
mojtabart.bsky.social@mojtabart.bsky.social

🧠 Excited by synapse-level brain mapping? Join us at a world-class institute to build molecular tools based on our new #LICONN work — and push the frontier of #MolecularConnectomics. Let’s decode the brain, one synapse at a time. hhmi.wd1.myworkdayjobs.com/en-US/Extern...

Jake Watson reposted

Given all that is going on consider this quote from Bertram Russell's 1930 book The conquest of Happiness: “The man who can be interested in the structure of atoms or the way in which a beetle navigates, is likely to get a joy in life which no amount of success in the pursuit of power can give. ”

The Neural Mechanisms of Cognitive Function meeting in beautiful #Pipa has sadly come to an end, but this meeting has given me new faith that really fascinating and innovative science is fully compatible with a kind, considerate, and supportive atmosphere! #BeNiceAndEnjoyYourScience

..and it is not every meeting that your first task for the day is trying to keep up with Brazilian football on the beach!

Abhilasha Joshi, PhD@rhythmicspikes.bsky.social

We are on for #Day4 at the #Neural Mechanisms of #cognitive Function at Pipa, Brazil 🇧🇷 Respecting local tradition the first session was ⚽️ 🏖️🏆🥇 Great to play with @melgaby.bsky.social after 8 years! (of course he’s as competitive as ever 😅) @jakefwatson.bsky.social @tristan-geiller.bsky.social ⭐️

Striking insights into the information content of hippocampal subpopulations! A really stunning example of how understanding discrete cell types brings coherence and clarity to complex neuronal activity. Congrats to all

Liset M. de la Prida@lmprida.bsky.social

New from the lab!! 👉🏼 authors.elsevier.com/a/1kgT43BtfH... 📝 @cellpress.bsky.social We discovered that genetically-defined neuron types in the hippocampus form unique manifolds! Dual color imaging, chemogenetics and topological analysis all at once! With Juan Gallego @juangallego.bsky.social

Beautiful and thorough dissection of neuronal heterogeneity! Individual cells matter.

mark cembrowski@markcembrowski.bsky.social

delighted to share our work revealing a new type of excitatory hippocampal neuron we call the "ovoid cell", which has really exquisite properties relative to adjacent pyramidal cells! superb work of first-author @adriennekinman.bsky.social and many others in the lab www.nature.com/articles/s41...

Possibly as exciting as the science - our view of.. ‘exploring brain function across species’ made the cover of Cell @cellpress.bsky.social Arranged with local ingredients while walking on Gimsøy, Norway! www.cell.com/cell/current (and paper below)

Jake Watson@jakefwatson.bsky.social

Is neuroscience research really working to understand the human brain? Or do we get lost in mouse cognition? I’ve asked myself this a lot since starting to work with human tissue. Our first Jonas Lab foray into untangling human hippocampal circuits is now online! www.cell.com/cell/fulltex... 1/a few